Storm Drain Lateral Replacements & New Installations

When Should a Storm Drain Lateral Be Replaced?

Replacement may be considered when the line has:

• Collapsed sections
• Severe root intrusion
• Multiple cracks or failed joints
• Recurring sediment blockages
• Major offsets
• Significant deterioration
• Improper grade
• Structural damage

A camera inspection can help determine whether the problem is localized or affects a larger portion of the line.

If a drain can be restored through cleaning alone, replacement may not be necessary.

New Storm Drain Installation

New drainage systems may be installed to serve:

• Driveways
• Parking lots
• Courtyards
• Yards
• Roof runoff
• Garage entrances
• Landscape areas
• Commercial loading zones

The system should be designed around actual water flow patterns.

Placing a drain where it is convenient rather than where water naturally collects can produce disappointing results.

Sizing and Slope Matter

Storm drain piping must be capable of handling expected runoff and should maintain appropriate grade toward the discharge point. A pipe that is too small may become overwhelmed during heavy rainfall. Poor slope can create standing water and sediment accumulation inside the line. A storm drain should move water to an appropriate discharge point; it should not simply shift the drainage problem from one location to another. That is why the full drainage path matters.

Residential Storm Drain Systems

Homes often experience drainage issues near foundations, patios, driveways, side yards, or garages. New laterals may connect multiple collection points to create a more coordinated system. Drain placement should reflect grading, landscape conditions, and existing property improvements.

Commercial Storm Drain Replacement

Commercial properties often handle much larger volumes of runoff from roofs, paved areas, and parking lots. Their systems may connect numerous catch basins, trench drains, and underground laterals. Replacement work should consider vehicle loading, maintenance access, sediment accumulation, and business operations.

Cleanouts and Future Maintenance

New storm drain systems should be designed with future cleaning and inspection in mind. Accessible cleanouts or basin entry points can make hydro jetting and camera work easier if the system later becomes restricted.

Considering the Entire Drainage System

A new lateral cannot compensate for every drainage problem. If the downstream discharge point is blocked or undersized, simply replacing one section may not improve overall performance. Catch basins, pipe sizing, grading, downstream connections, and the final outlet all need to work together. A properly designed storm drain lateral replacement or new installation should improve how runoff is collected, transported, and discharged—not just bury new pipe underground.